Caseology Battery for Galaxy Note 4 Case (2014) - Standard Battery - 2x Battery, 1x Charger Non-OEM accessory Compatible with all versions of Samsung Galaxy Note 4 (AT&T, Sprint & T-Mobile Models) Lithium-ion Technology for optimum battery life with approx. 500 charging cycles Portable wall charger with Multi-connector USB port (cable not included) High capacity 3200 mAh for long lasting power with 3.7 Voltage Package includes: 2x rechargeable batteries and 1x USB wall charger